Hello can you me posted picture of question

Degree of the polynomial is defined as the highest exponent or power of the variable involved. Do not mistake it with the power of first term.

From the given polynomial we can see that the highest exponent is 10 of the fourth term. So the degree of the given polynomial is 10.

Thus, the answer to this question is option D

Ucan draw that on a graph sheet and count the no. of units and apply the area formula of rectangle